Stereoscope



(No Mndel.)

- B. L. SINGLEY.

STEREOSGOPE. No. 597,440. Patented Jan. 18, 1898.

WITNESSES: IN'SZ'EN'IDR:

{Mm 6W2 a: EENNEYILZ/E 11.230112? SINEL'EY W BY gj wfiaimmmr.

UNITED STATES PATENT rricn.

BENNEVILLE LLOYD SINGLEY, OF MEADVILLE, PENNSYLVANIA.

STEREOSCOPE.

SPECIFICATION forming part of Letters Patent No. 597,440, dated January 18, 1898. Application filed February 24, 1896. $eria1N0. 580,335. (No model.)

To aZZ whom it may concern:

Be it known that I, BENNEVILLE LLOYD SINGLEY, of Meadville, in the county of Crawford, in the State of Pennsylvania, have invented certain new and useful Improveend view of the same lookin g toward the view,

and Fig. 3 is a top plan view of the end of the shaft upon which the lens-frame is seated.

The lensframe is shown at G and is a simple frame adapted to hold the two lenses. It takes on the hood F, the front edge of which is fitted to the form of the face of the observer by having its upper edge out to fit the forehead, its sides to fit the temples of the face, and its under wings to fit the sides of the nose and checks. By these meansa dark chamber is secured whenever the scope is applied to the face. I claim nothing on this feature of the dark chamber per so; but in the construction of this class of stereoscopes much difficulty has been experienced in joining the ends of the hood J J with the shaft G and the under edge of the lens-frame, so as to properly confine the intractible ends J J of the hood in such a way that they would not incline to straighten out when made of bent veneers as now is the common practice of making such hoods. To properly secure and hold these ends, 1 have provided the means shown, which consist in making the shaft A to project toward the face the distance shown at B beyond the surface of the lens-frame, thus creating two projecting ledges upon which the ends J J of the hood can rest. Vihen the parts are assembled, as seen in Fig. 2, the tendency of the corners of the hood to curl out or straighten is effectually resisted by these ledges B B. The edges of the shaft are also grooved or rabbeted, as at G C, to receive the corner h, Fig. '1, of the hood, as a means not only to hold said corner firmly, but also to hide the joint, which otherwise would be exposed and which it is often difficult to fit closely and accurately.

The edge of the lens-frame is rabbeted on its edge to receive the edge of the hood, and the under corners of the hood are notched out, as at m, Fig. 1, to fit the rabbeted ledge B G of the shaft A.

The under edge of the lens-frame G is slabbed off to form a seat for the shaft A to rest upon.

The parts are assembled as follows: The lens-frame and division-piece (not shown) are confined in a special clamp. The hood is then fastened to the frame by nails or screws a a n, Fig. 2. Care is taken that the ends of the hood J J and the corners h h are brought around into a symmetrical position with reference to the center of the lens-frame. Then the shaft is laid over the whole in the position seen in Fig. l, the notched ends of the ledge for supporting the ends of the hood.

2. In a stereoscope, the combination with the lens-frame and shaft provided with the hood-supporting ledges B B, and rabbets G C, of the hood notched at its ends to fit said ledges and rabbets.

In testimony whereof I have hereto subscribed my name this 21st day of February, A. D. 1896.

BENNEYILLE LLOYD SINGLEY.

Inpresence of- G. R. "MCKENZIE, S. F. CHARLTON. 

